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137 lines
4.2 KiB
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137 lines
4.2 KiB
Plaintext
Squash Display Kiosk Template
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==============================
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This template configures a Raspberry Pi or Linux system as a dedicated kiosk display
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that automatically boots to a fullscreen web browser showing a specified URL.
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IMPORTANT: This template makes SYSTEM-LEVEL changes to the host machine, including
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installing packages, configuring auto-login, and modifying system services.
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REQUIREMENTS
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------------
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* Raspberry Pi or Linux system with HDMI output
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* Fresh Raspberry Pi OS Lite installation (recommended)
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* Docker installed (for running setup)
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* Internet connection for package installation
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* Target URL to display
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WHAT IT DOES
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------------
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This template automates the complete kiosk setup process:
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1. Installs required packages (Chromium, X server, utilities)
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2. Creates/configures kiosk user account
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3. Sets up auto-login on boot
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4. Configures X server to start automatically
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5. Launches Chromium in kiosk mode
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6. Disables screen blanking and power management
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7. Optional watchdog to restart browser if it crashes
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8. Configures GPU memory for better performance (RPi)
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CONFIGURATION
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-------------
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Key settings in service.env:
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* KIOSK_URL - The webpage to display (required)
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* KIOSK_USER - System user for kiosk (default: squash)
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* DISPLAY_WIDTH/HEIGHT/REFRESH - Display resolution
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* GPU_MEM - GPU memory allocation in MB (RPi only)
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* ENABLE_WATCHDOG - Auto-restart crashed browser
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* ENABLE_AUTO_LOGIN - Boot directly to kiosk
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* ENABLE_HDMI_KEEP_ALIVE - Prevent display sleep
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INSTALLATION
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------------
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1. Configure your settings in the service configuration
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2. Run: ./install.sh
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3. Confirm system modifications when prompted
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4. REBOOT the system: sudo reboot
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5. System will auto-start in kiosk mode
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The installation uses a privileged Docker container to make the
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necessary system changes. This is intentional and required.
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USAGE
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-----
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After installation and reboot:
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- System boots directly to kiosk display
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- No keyboard/mouse needed for normal operation
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- Browser runs in fullscreen kiosk mode
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- Automatic recovery from crashes (if watchdog enabled)
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COMMANDS
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--------
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* ./install.sh - Install and configure kiosk
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* ./status.sh - Check kiosk and configuration status
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* ./configure.sh - Update kiosk settings (URL, display, etc.)
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* ./logs.sh - View setup and system logs
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* ./uninstall.sh - Remove Docker container (not system changes)
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* ./start.sh - Re-run setup (rarely needed)
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* ./stop.sh - Stop setup container
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MANUAL TESTING
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--------------
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To test the kiosk without rebooting:
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sudo -u squash startx /home/squash/kiosk.sh
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To exit kiosk mode during testing:
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Alt+F4 or Ctrl+Alt+Backspace
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TROUBLESHOOTING
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---------------
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1. Black screen after reboot:
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- Check X server: ps aux | grep X
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- View logs: journalctl -u getty@tty1
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- Check script: cat /home/squash/kiosk.sh
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2. Browser won't start:
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- Test manually: chromium-browser
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- Check logs: ./logs.sh
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- Verify packages: dpkg -l | grep chromium
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3. Wrong resolution:
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- Check available modes: xrandr
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- Update settings: ./configure.sh
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- Verify HDMI connection
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4. Page doesn't load:
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- Check network: ping google.com
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- Test URL: curl YOUR_URL
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- Verify in browser: chromium-browser YOUR_URL
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5. Screen goes to sleep:
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- Check power settings: xset q
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- Verify HDMI service: systemctl status hdmi-keep-alive
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CUSTOMIZATION
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-------------
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To modify kiosk behavior:
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1. Edit /home/squash/kiosk.sh for browser options
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2. Edit /home/squash/.bashrc for startup behavior
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3. Use ./configure.sh to update URL and display settings
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SECURITY NOTES
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--------------
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* Kiosk mode disables many browser security features
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* No authentication required for physical access
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* Consider network isolation for public displays
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* Regular updates still recommended for security
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UNINSTALLING
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------------
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The uninstall.sh script only removes the Docker container.
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To fully remove kiosk configuration:
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1. Remove auto-login:
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sudo rm /etc/systemd/system/getty@tty1.service.d/autologin.conf
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2. Remove kiosk scripts:
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rm /home/squash/kiosk.sh /home/squash/watchdog.sh
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3. Re-enable updates:
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sudo systemctl enable apt-daily.service apt-daily.timer
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4. Remove packages (optional):
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sudo apt remove chromium-browser xorg xinit unclutter
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5. Remove user (optional):
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sudo userdel -r squash |